Home / 129,411.36-194,149.26-102,857.54

Finding the Fourth Proportional to 129,411.36, 194,149.26 and 102,857.54

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Solution

The fourth proportional to 129,411.36, 194,149.26 and 102,857.54 is: 154,311.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,411.36 : 194,149.26 = 102,857.54 : x
  2. Step 2: Convert to fraction form
    129,411.36/194,149.26 = 102,857.54/x
  3. Step 3: Cross multiply
    129,411.36x = 194,149.26 × 102,857.54
  4. Step 4: Simplify right side
    129,411.36x = 19,969,714,305.67
  5. Step 5: Solve for x
    x = 19,969,714,305.67/129,411.36
  6. Step 6: Final answer
    x = 154,311.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.